Given
\qquad \overline{ol}\perp\overline{on}
ol
⊥
on
start overline, o, l, end overline, \perp, start overline, o, n, end overline
\qquad m \angle lom = 3x - 15^\circm∠lom=3x−15
∘
m, angle, l, o, m, equals, 3, x, minus, 15, degrees
\qquad m \angle mon = 5x - 23^\circm∠mon=5x−23
∘
m, angle, m, o, n, equals, 5, x, minus, 23, degrees
find m\angle monm∠monm, angle, m, o, n: